SPMWH1228FD7WAP0S3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAP0S3 is a Samsung Semiconductor LM281B series cool white LED in 2835 metric package (1113 case code) designed for surface mount lighting applications. This part operates at 6500K color temperature with 150mA test current and 3.1V forward voltage. The product is classified as "Not For New Designs," making identification of compatible substitute parts essential for ongoing production support and component sourcing.

Substiute Parts

SPMWH1228FD7WAP0S3

Samsung Semiconductor, Inc.In Stock: 1170SPMWH1228FD7WAP0S3 Datasheet

Current PartRFQ

SPMWH1228FD7WAP0SC

Samsung Semiconductor, Inc.In Stock: 926SPMWH1228FD7WAP0SC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAP0S3 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Color specification: White, Cool 6500K
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Forward Voltage (Vf): 3.1V nominal
• Test Current: 150mA
• Maximum Current: 160mA
• Viewing Angle: 120°
• CRI: 90
• RoHS Compliance: Required
• MSL Rating: 2A (4 Weeks)

Allowable Variation Parameters:

• Flux output at 25°C, 150mA: Within acceptable tolerance range
• Lumens/Watt efficiency: Variation acceptable within product series evolution
• Thermal Resistance: Variation acceptable within package thermal design limits
• Product Status: Active status preferred for ongoing availability

The SPMWH1228FD7WAP0SC qualifies as a direct substitute based on identical matching of all mandatory parameters while representing an evolved product line variant (LM281B+ series).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWH1228FD7WAP0SC

The SPMWH1228FD7WAP0SC is the qualified direct substitute for SPMWH1228FD7WAP0S3. Selection rationale is based on the following engineering factors:

Product Status Alignment: The substitute part carries Active product status, ensuring continued manufacturing availability and supply chain stability. The main part is designated "Not For New Designs," making the active substitute the appropriate choice for ongoing production requirements.

Electrical Compatibility: Both parts maintain identical forward voltage (3.1V), test current (150mA), and maximum current (160mA) specifications. Circuit-level integration requires no modification.

Optical Specifications: Both parts deliver identical color temperature (6500K), CRI (90), and viewing angle (120°). The substitute exhibits 3lm lower flux output (55lm vs. 58lm nominal) and 7 lm/W lower efficiency (118 vs. 125 lm/W). These variations fall within acceptable tolerance for the LM281B product family evolution and do not constitute functional incompatibility.

Thermal Characteristics: The substitute exhibits 8°C/W higher thermal resistance (25°C/W vs. 17°C/W). Thermal design review is required for applications operating at maximum current or elevated ambient temperatures to confirm adequate heat dissipation.

Compliance & Packaging: Both parts maintain identical RoHS compliance, MSL rating (2A, 4 Weeks), package dimensions (3.50mm × 2.80mm), and height (0.75mm). No PCB layout or assembly process modifications are required.

Recommendation: The SPMWH1228FD7WAP0SC is suitable for direct substitution in applications where the 3lm flux reduction and thermal resistance increase are acceptable within system design margins. Thermal analysis is mandatory for high-current or high-temperature operating conditions.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAP0SC be used as a direct drop-in replacement for SPMWH1228FD7WAP0S3?

A: Yes, for applications where the 3lm lower flux output and 8°C/W higher thermal resistance are within acceptable design margins. Both parts share identical electrical specifications (3.1V, 150mA), optical properties (6500K, 90 CRI, 120° viewing angle), and package dimensions (2835 metric, 3.50mm × 2.80mm). No PCB layout changes are required.

Q: What is the significance of the LM281B vs. LM281B+ series designation?

A: The LM281B+ represents an evolved product variant within the Samsung LM281B family. Both series maintain identical color temperature, CRI, and electrical operating parameters. The LM281B+ offers active production status, whereas the original LM281B is designated "Not For New Designs." The series evolution reflects manufacturing process improvements while preserving functional compatibility.

Q: How does the 8°C/W thermal resistance difference affect circuit design?

A: The SPMWH1228FD7WAP0SC exhibits higher thermal resistance (25°C/W vs. 17°C/W), resulting in greater junction temperature rise under identical current and ambient conditions. For applications operating at maximum current (160mA) or elevated ambient temperatures, thermal modeling is required to confirm that junction temperature remains within acceptable limits. Standard operating conditions (150mA, moderate ambient) typically accommodate this difference without design modification.

Q: Are both parts RoHS compliant and suitable for regulated markets?

A: Yes. Both SPMWH1228FD7WAP0S3 and SPMWH1228FD7WAP0SC carry RoHS Compliant status and identical MSL rating (2A, 4 Weeks). Both parts meet regulatory requirements for restricted substance compliance and moisture handling.

Q: What is the flux output tolerance range for each part?

A: SPMWH1228FD7WAP0S3 operates within 56–59lm at 25°C and 150mA test current (nominal 58lm). SPMWH1228FD7WAP0SC operates within 53–56lm at identical conditions (nominal 55lm). The 3lm nominal difference reflects product family evolution; both parts maintain controlled tolerance bands suitable for lighting applications.

Q: Can these parts be used interchangeably in existing production assemblies?

A: Yes, provided that thermal design margins accommodate the 8°C/W thermal resistance increase and system light output specifications accept the 3lm flux reduction. No assembly process changes, solder profile modifications, or PCB rework are required. Component orientation and placement remain identical.

Q: What inventory considerations apply to part selection?

A: SPMWH1228FD7WAP0S3 inventory is 1141 pcs (Not For New Designs status). SPMWH1228FD7WAP0SC inventory is 868 pcs (Active status). For new production programs, SPMWH1228FD7WAP0SC is the recommended selection due to active manufacturing status and continued supply chain support.